Just my thought, pull a WWE 12 storyline and in order to get him major heat have him bring back the European championship claiming that Santino dragged the US title through the dirt and it is no longer has the Prestige to make him important, he then replaces it with the European championship, beats a few blokes then a returning face Jack Swagger claiming how it was only through Cesaros actions that the belt lost its prestige and has a decent feud leading to either
A) Cesaro retaining and the US title is retired for a bit and the European championship gets a nice little showing
B) Swagger wins and reinstates the US title with a lot more prestige because of how hard he fought for it.